Finding the Fourth Proportional to 42,123.86, 58,116.91 and 27,790.81

Step by Step Solution

1. Step 1: Write the proportion equation
   42,123.86 : 58,116.91 = 27,790.81 : x
2. Step 2: Convert to fraction form
   42,123.86/58,116.91 = 27,790.81/x
3. Step 3: Cross multiply
   42,123.86x = 58,116.91 × 27,790.81
4. Step 4: Simplify right side
   42,123.86x = 1,615,116,003.60
5. Step 5: Solve for x
   x = 1,615,116,003.60/42,123.86
6. Step 6: Final answer
   x = 38,342.07